morphing pt 2

Over a couple of evenings, I've returned to morphing - I found a much simpler, if more computationally expensive algorithm for morphs - Feature based metamorphosis - by Bier. After some false starts -

it now works (code). I've just got some parameter tweaking to go, so here are some results using different control points - the smaller fish are the output, the larger the input (adding these points is a skill, as you have to avoid pinching the transform anywhere). This takes a while tho, 10 control lines renders in colour on a 800x300 image pair in 30 seconds. Hopefully a video will follow tomorrow evening.